Best Supplements for Increased Insulin-like Growth Factor-1 Level
Ranked by research evidence. Compare 3 supplements across 5 papers from the biomedical literature, with effect direction, evidence strength, and dose range for each.
Top picks by evidence
- Low evidence3 studies
Across 3 studies, 2 reported small beneficial effects of whey protein on increasing insulin-like growth factor-1 (IGF-1) levels, while 1 study found a neutral effect. The median study duration was 126 days (~18 weeks), indicating effects typically observed with longer-term supplementation. Most studies involved older adults (≥65 years) or clinical populations with sarcopenia; one study examined pre-menopausal women with post-exercise dosing.
3 supplements
- LowWhey ProteinAcross 3 studies, 2 reported small beneficial effects of whey protein on increasing insulin-like growth factor-1 (IGF-1) levels, while 1 study found a neutral effect. The median study duration was 126 days (~18 weeks), indicating effects typically observed with longer-term supplementation. Most studies involved older adults (≥65 years) or clinical populations with sarcopenia; one study examined pre-menopausal women with post-exercise dosing.2 beneficial1 neutral3 studies